page_title: Timeline of eurypterid research
section_title: 1870s
hierarchical_section_title: Timeline of eurypterid research / 19th century / 1870s
caption_attribution_description: Paracarcinosoma (Eusarcus) scorpionis. The Eurypterida of New York. Volume 2. New York State Museum Memoir 14, plate 27
context_page_description: This timeline of eurypterid research is a chronologically ordered list of important fossil discoveries, controversies of interpretation, and taxonomic revisions of eurypterids, a group of extinct aquatic arthropods closely related to modern arachnids and horseshoe crabs that lived during the Paleozoic Era.
  The scientific study of eurypterids began in the early 19th century when James E. DeKay recognized a fossil that had previously been described as that of a fish as arthropod in nature. Though DeKay erroneously believed the fossil to represent a crustacean and a missing link between trilobites and branchiopods, the fossil became the type species of first ever eurypterid to be scientifically described, Eurypterus remipes, in 1825.
  Over 250 species of eurypterids in 73 recognized valid genera have been described since the discovery of Eurypterus remipes. The most recent genus to be described is Soligorskopterus and the most recent species to be described is Soligorskopterus shpinevi, the second one of the genus.
context_section_description: 1870
  Henry Woodward described the species Necrogammarus salweyi, believing it to represent an amphipod.
  1871
  Dawson reclassified his plant Selaginites formosus as a eurypterid.
  1872
  Barrande describes Pterygotus bohemicus, later considered part of the genus Acutiramus, P. kopaninensis and P. nobilis.
  1873
  Friedrich Goldenberg coined the name Polyzosternites to replace Adelophthalmus.
  1875
  Grote and Pitt describe Pterygotus cummingsi, later considered the type species of Acutiramus.
  Grote and Pitt describe the species Eusarcus scorpionis.
  1877
  Dionýs Štúr described the species Eurypterus salmi, later referred to Campylocephalus.
  Meek and Worthen described the species Eurypterus pennsylvanicus, later referred to Adelophthalmus.
  Hall described the species Eurypterus mansfieldi, later referred to Adelophthalmus.
  1879
  John William Dawson described the species Erettopterus canadensis.
caption: Reconstruction of Eusarcana scorpionis, first named in 1875 under the name Eusarcus.
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